--- On Thu, 7/16/09, Kevin A. McGrail <[email protected]> wrote:
> I'm looking at the built-in Macros
> and the _ macro in the SendmailMacros hash looks like a
> possibility to replace doing a reverse lookup on hosts. The
> theory being (and someone else has mentioned this) that this
> portion of my reverse DNS check in the milter is duplicative
> of a reverse PTR lookup.
>
> Does anyone know the Macro that contains the IP and the
> reverse lookup for that IP from Sendmail? Or is _ the
> best one and I should parse it for (.*)\s*[(.*)] or
> something similar?
${client_ ...}
client_addr IP address
client_ptr DNS PTR string
client_resolve (OK, FAIL, FORGED, TEMP)
client_port TCP port number
client_name may be an address literal in brackets
It's more efficient to check these in the Sendmail M4 rules than to refer these
to MimeDefang for simple checks.
See URL http://www.sendmail.org/~ca/email/chk-810.html for an example (titled
"Unresolvable client address" near the bottom of the web page).
_______________________________________________
NOTE: If there is a disclaimer or other legal boilerplate in the above
message, it is NULL AND VOID. You may ignore it.
Visit http://www.mimedefang.org and http://www.roaringpenguin.com
MIMEDefang mailing list [email protected]
http://lists.roaringpenguin.com/mailman/listinfo/mimedefang
